Geometry: An Interactive Journey to Mastery

Experience an intuitive and fun approach to learning the subject of geometry in this course taught by an award-winning educator.

• By This Professor
• 01: Geometry—Ancient Ropes and Modern Phones
• 02: Beginnings—Jargon and Undefined Terms
• 03: Angles and Pencil-Turning Mysteries
• 04: Understanding Polygons
• 05: The Pythagorean Theorem
• 06: Distance, Midpoints, and Folding Ties
• 07: The Nature of Parallelism
• 08: Proofs and Proof Writing
• 09: Similarity and Congruence
• 10: Practical Applications of Similarity
• 11: Making Use of Linear Equations
• 12: Equidistance—A Focus on Distance
• 13: A Return to Parallelism
• 14: Exploring Special Quadrilaterals
• 15: The Classification of Triangles
• 16: Circle-ometry—On Circular Motion
• 17: Trigonometry through Right Triangles
• 18: What Is the Sine of 1°?
• 19: The Geometry of a Circle
• 20: The Equation of a Circle
• 21: Understanding Area
• 22: Explorations with Pi
• 23: Three-Dimensional Geometry—Solids
• 24: Introduction to Scale
• 25: Playing with Geometric Probability
• 26: Exploring Geometric Constructions
• 27: The Reflection Principle
• 28: Tilings, Platonic Solids, and Theorems
• 29: Folding and Conics
• 30: The Mathematics of Symmetry
• 31: The Mathematics of Fractals
• 32: Dido's Problem
• 33: The Geometry of Braids—Curious Applications
• 34: The Geometry of Figurate Numbers
• 35: Complex Numbers in Geometry
• 36: Bending the Axioms—New Geometries